CN2669277Y - Bar-code decoding device - Google Patents
Bar-code decoding device Download PDFInfo
- Publication number
- CN2669277Y CN2669277Y CNU2003201176075U CN200320117607U CN2669277Y CN 2669277 Y CN2669277 Y CN 2669277Y CN U2003201176075 U CNU2003201176075 U CN U2003201176075U CN 200320117607 U CN200320117607 U CN 200320117607U CN 2669277 Y CN2669277 Y CN 2669277Y
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- Prior art keywords
- circuit
- decoding device
- code decoding
- bar code
- resistance
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Abstract
The utility model mainly relates to a bar-code decoding device including a CPU system, a data store circuit, an input-output circuit, a function control circuit and an interface circuit. The function control circuit includes a function circuit and a control circuit. A cue circuit is arranged between the CPU system and the interface circuit. A switch transistor Q7 is arranged between a resistor R49 and an operational amplifier 321 in the control circuit. The base electrode of the switch transistor is connected with the output end of the operational amplifier, and a collector is connected with the resistor R49. The emitter is connected with the earth. As a result of the above technical scheme, the decoding speed of the bar-code decoding device is quick, and the recognizing effect is good; the setting function is strong, the error information can be notified in time, and the working efficiency is enhanced.
Description
Technical field
The utility model relates generally to a kind of bar code decoding device.
Background technology
In the production field of present barcode scanner, the decoding speed of demoder is lower, not prompting when input signal is made mistakes, and it is limited that use is provided with function.
Summary of the invention
The purpose of this utility model provides a kind of novel bar code decoding device, overcomes above-mentioned defective, makes the decoding speed of bar code decoding device accelerate, and can in time point out error message, strengthens greatly aspect function setting.
The utility model is achieved by the following technical solution: the bar shaped demoder comprises cpu system, data storage circuitry, imput output circuit, function control circuit, interface circuit, described function control circuit comprises functional circuit and control circuit, it is characterized in that: be connected with a cue circuit between described cpu system and the interface circuit, be connected with a switching transistor Q7 in the described control circuit between resistance R 49 and the operational amplifier 321, the base stage of described switching transistor is connected with the output terminal of operational amplifier, its collector is connected with resistance R 49, its grounded emitter.
Above-mentioned bar code decoding device, described cpu system are that the IC of 80C32 forms by model mainly.
Above-mentioned bar code decoding device, described memory circuit is made of data latches and data working storage.
Above-mentioned bar code decoding device, described data latches are that the IC of 74HC373 constitutes by model mainly.
Above-mentioned bar code decoding device, described data working storage are that 62256 IC constitutes by model mainly.
Above-mentioned bar code decoding device, described cue circuit is by an end and resistance R 32 series connection of a capacitor C 9, the other end is connected with functional circuit, one end of resistance R 31 links to each other with the pin 3 of joint Q11 and ground connection, the other end links to each other with the pin 1 of joint Q11 and is connected with resistance R 31 with resistance R 32, the pin 2 of joint Q11 is connected with the pin 2 of hummer BUZZER, the pin 1 of hummer BUZZER connects power supply, crystal diode D7 one end is connected with power supply, and the other end is connected with the pin 2 of hummer BUZZER; Resistance R 33 1 ends are connected with functional circuit, and the other end is connected with LED, and the other end and the power supply of LED connect to form.
Above-mentioned bar code decoding device, described switching transistor are the NPN type.
Owing to adopted above technical scheme, make that the decoding speed of bar code decoding device is fast, recognition effect is good, is provided with powerfully, in time points out error message, has improved work efficiency.
Description of drawings
Fig. 1 is the functional structure chart of the utility model bar code decoding device.
Fig. 2 is the connection diagram of the utility model bar code decoding device CPU and data storage circuitry.
Fig. 3 is the circuit diagram of first kind of function control circuit of the utility model bar code decoding device.
Fig. 4 is the circuit diagram of second kind of function control circuit of the utility model bar code decoding device.
Fig. 5 is the circuit diagram that the utility model bar code decoding device inserts the interface circuit of CPU.
Fig. 6 is the circuit diagram that the utility model bar code decoding device inserts the scan module interface circuit.
Fig. 7 is the circuit diagram that the utility model bar code decoding device inserts the imput output circuit interface circuit.
Fig. 8 is the circuit diagram of the utility model bar code decoding device imput output circuit.
Fig. 9 is the circuit diagram of the utility model bar code decoding device cue circuit.
Specific implementation method
The utility model is described in further detail below in conjunction with accompanying drawing:
See Fig. 1～2, system power-up, the bar code decoding device starts, when the switch SW 1 of pressing 31 kinds of functional circuits, cpu system 1 is started working, described cpu system 1 is that the IC of 80C32 forms by model mainly, cpu system 1 sends an instruction by interface circuit 4 data receiver JP2, deliver to the bar code automotive engine system again, automotive engine system begins to take signal, data-signal after the collection again through data receiver JP2 judge whether the information of reading in by cue circuit 6 and the data message that reads in whether correct, again data are sent to cpu system 1, described cue circuit is by an end and resistance R 32 series connection of a capacitor C 9, the other end is connected with functional circuit 31, one end of resistance R 31 links to each other with the pin 3 of joint Q11 and ground connection, the other end links to each other with the pin 1 of joint Q11 and is connected with resistance R 31 with resistance R 32, the pin 2 of joint Q11 is connected with the pin 2 of hummer BUZZER, the pin 1 of hummer BUZZER connects power supply, crystal diode D7 one end is connected with power supply, and the other end is connected with the pin 2 of hummer BUZZER; Resistance R 33 1 ends are connected with functional circuit, the other end is connected with LED, the other end and the power supply of LED connect to form, when makeing mistakes, will send chimes of doom and bright signal lamp is pointed out the user, after cpu system 1 obtains data-signal, begin to decipher work of treatment, data after cpu system 1 will be handled output in the data storage circuitry 2, described data storage circuitry 2 is composed in parallel by data latches 21 and data working storage 22, at first a part of data that transmission is come out latch by data latches 21, after the data transmitting out deliver to data working storage 22 and wait for output synchronously, described data latches 21 is that the IC of 74HC373 forms by model mainly, and data working storage 22 is main to be that 62256 IC forms by model.After all data processing are intact, under the effect of control circuit 32, data after handling are delivered to interface circuit 4, be sent to external unit 7 by imput output circuit 5 again, be connected with a switching transistor Q7 in the described control circuit 32 between resistance R 49 and the operational amplifier 321, the base stage of described switching transistor Q7 is connected with the output terminal of operational amplifier, and its collector is connected with resistance R 49, its grounded emitter, described switching transistor are the NPN type.
Owing to adopted above technical scheme, make that the decoding speed of bar code decoding device is fast, recognition effect is good, is provided with powerfully, in time points out error message, has improved work efficiency.
Claims (7)
1, a kind of bar code decoding device, comprise cpu system, data storage circuitry, imput output circuit, function control circuit, interface circuit, described function control circuit comprises functional circuit and control circuit, it is characterized in that: be connected with a cue circuit between described cpu system and the interface circuit, be connected with a switching transistor (Q7) between resistance of described control circuit (R49) and the operational amplifier (321), the base stage of described switching transistor is connected with the output terminal of operational amplifier, its collector is connected its grounded emitter with resistance (R49).
2, bar code decoding device according to claim 1 is characterized in that, described cpu system is that the IC of 80C32 forms by model mainly.
3, bar code decoding device according to claim 1 is characterized in that, described memory circuit is made of data latches and data working storage.
4, bar code decoding device according to claim 3 is characterized in that, described data latches is that the IC of 74HC373 constitutes by model mainly.
5, bar code decoding device according to claim 3 is characterized in that, described data working storage is that 62256 IC constitutes by model mainly.
6, bar code decoding device according to claim 1, it is characterized in that, one end of the electric capacity of described cue circuit (C9) and resistance (R32) series connection, the other end is connected with functional circuit, one end of resistance (R31) links to each other with the pin 3 of joint (Q11) and ground connection, the other end links to each other with the pin 1 of Q11 and is connected with resistance (R31) with resistance (R32), the pin 2 of joint (Q11) is connected with the pin 2 of hummer (BUZZER), the pin 1 of hummer (BUZZER) connects power supply, crystal diode (D7) end is connected with power supply, and the other end is connected with the pin 2 of hummer (BUZZER); Resistance (R33) end is connected with functional circuit, and the other end is connected with light emitting diode (LED), and the other end of light emitting diode (LED) is connected with power supply.
7, bar code decoding device according to claim 1 is characterized in that, described switching transistor is the NPN type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201176075U CN2669277Y (en) | 2003-10-31 | 2003-10-31 | Bar-code decoding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201176075U CN2669277Y (en) | 2003-10-31 | 2003-10-31 | Bar-code decoding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2669277Y true CN2669277Y (en) | 2005-01-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201176075U Expired - Fee Related CN2669277Y (en) | 2003-10-31 | 2003-10-31 | Bar-code decoding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2669277Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908131A (en) * | 2010-06-01 | 2010-12-08 | 福建新大陆电脑股份有限公司 | Bar-code decoder based on USB interface |
-
2003
- 2003-10-31 CN CNU2003201176075U patent/CN2669277Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908131A (en) * | 2010-06-01 | 2010-12-08 | 福建新大陆电脑股份有限公司 | Bar-code decoder based on USB interface |
| CN101908131B (en) * | 2010-06-01 | 2013-03-27 | 福建新大陆电脑股份有限公司 | Bar-code decoder based on USB interface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |